ZyXEL Communications 1000 User Manual

Chapter 39 Device HA

ZyWALL USG 1000 User’s Guide

The master and backup ZyWALL form a single ‘virtual router’. In the following 
example, master ZyWALL A and backup ZyWALL B form a virtual router.

Figure 451   Virtual Router 

You can have multiple ZyWALL virtual routers on your network. Use a different 
cluster ID to identify each virtual router. In the following example, ZyWALLs A and 

HA Status

The text before the slash shows whether the device is configured as the 
master or the backup role.

This text after the slash displays the monitored interface’s status in the 
virtual router.

Active - This interface is up and using the virtual IP address and subnet 
mask. 

Stand-By - This interface is a backup interface in the virtual router. It is 
not using the virtual IP address and subnet mask. 

Fault - This interface is not functioning in the virtual router right now. In 
active-passive mode (or in legacy mode with link monitoring enabled), if 
one of the master ZyWALL’s interfaces loses its connection, the master 
ZyWALL forces all of its interfaces to the fault state so the backup 
ZyWALL can take over all of the master ZyWALL’s functions.

Apply

Click Apply to save your changes back to the ZyWALL.

Reset

Click Reset to return the screen to its last-saved settings. 

Table 178   Configuration > Device HA > General (continued)

A

B